/* giorgiaprestento.com — stylesheet
   Giorgia Prestento Design System. Tokens first, then components, then page sections. */

/* ---------- fonts ---------- */
@font-face { font-family: "Source Serif 4"; font-style: normal; font-weight: 400; src: url("SourceSerif4_36pt-Regular.ttf") format("truetype"); font-display: swap; }
@font-face { font-family: "Source Serif 4"; font-style: italic; font-weight: 400; src: url("SourceSerif4_36pt-Italic.ttf") format("truetype"); font-display: swap; }
@font-face { font-family: "Source Serif 4"; font-style: normal; font-weight: 500; src: url("SourceSerif4_36pt-Medium.ttf") format("truetype"); font-display: swap; }
@font-face { font-family: "Source Serif 4"; font-style: italic; font-weight: 500; src: url("SourceSerif4_36pt-MediumItalic.ttf") format("truetype"); font-display: swap; }
@font-face { font-family: "Source Serif 4"; font-style: normal; font-weight: 600; src: url("SourceSerif4_36pt-SemiBold.ttf") format("truetype"); font-display: swap; }
@font-face { font-family: "Public Sans"; font-style: normal; font-weight: 400; src: url("PublicSans-Regular.ttf") format("truetype"); font-display: swap; }
@font-face { font-family: "Public Sans"; font-style: normal; font-weight: 500; src: url("PublicSans-Medium.ttf") format("truetype"); font-display: swap; }
@font-face { font-family: "Public Sans"; font-style: normal; font-weight: 600; src: url("PublicSans-SemiBold.ttf") format("truetype"); font-display: swap; }

/* ---------- tokens ---------- */
:root {
  /* brand palette */
  --deep-blue: #023661;
  --rust: #DB5227;
  --mid-blue: #8FA6B8;
  --pale-blue: #E7EDF1;
  --chalk: #F8F4EF;
  --white: #FFFFFF;

  /* semantic */
  --bg: var(--pale-blue);
  --surface: var(--white);
  --surface-dark: var(--deep-blue);
  --fg: var(--deep-blue);
  --fg-muted: #3F6182;
  --fg-on-dark: var(--chalk);
  --fg-on-dark-muted: #B9C9D6;
  --border: #C7D5DF;
  --border-strong: var(--mid-blue);
  --border-on-dark: rgba(248, 244, 239, 0.2);

  /* type */
  --font-display: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-body: "Public Sans", -apple-system, "Segoe UI", sans-serif;
  --text-display-xl: 600 clamp(3rem, calc(2.2rem + 3vw), 5.5rem)/1.04 var(--font-display);
  --text-display-l: 500 clamp(2.25rem, calc(1.8rem + 2vw), 3.75rem)/1.08 var(--font-display);
  --text-display-m: 500 2.25rem/1.15 var(--font-display);
  --text-heading-m: 600 1.375rem/1.35 var(--font-body);
  --text-body-l: 400 1.25rem/1.6 var(--font-body);
  --text-body-m: 400 1.0625rem/1.65 var(--font-body);
  --text-body-s: 400 0.9375rem/1.6 var(--font-body);
  --text-eyebrow: 600 0.75rem/1 var(--font-body);
  --ls-eyebrow: 0.14em;
  --ls-tight: -0.01em;

  /* space, shape, motion */
  --radius-s: 3px;
  --radius-m: 6px;
  --shadow-s: 0 1px 2px rgba(16, 24, 32, 0.06);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --wrap: 1180px;
  --gutter: 40px;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: var(--text-body-m);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, figure, blockquote { margin: 0; }
img { display: block; max-width: 100%; height: auto; }

a { color: var(--fg); }
a:hover { color: var(--rust); }

:focus-visible { outline: 2px solid var(--rust); outline-offset: 3px; }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.eyebrow {
  font: var(--text-eyebrow);
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--fg-muted);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  font: 500 1.0625rem/1 var(--font-body);
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  padding: 15px 26px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--ease) 140ms, color var(--ease) 140ms,
              border-color var(--ease) 140ms, transform var(--ease) 140ms;
}
.btn:hover { transform: translateY(-1px); }

.btn--accent { background: var(--rust); color: var(--white); }
.btn--accent:hover { background: #C1441D; color: var(--white); }

.btn--primary { background: var(--deep-blue); color: var(--white); }
.btn--primary:hover { background: #012844; color: var(--white); }

.btn--outline { background: transparent; color: var(--fg); border-color: var(--fg); }
.btn--outline:hover { background: var(--deep-blue); color: var(--white); }

.btn--outline-light { background: transparent; color: var(--fg-on-dark); border-color: var(--fg-on-dark); }
.btn--outline-light:hover { background: var(--fg-on-dark); color: var(--deep-blue); }

.btn--l { font-size: 1.125rem; padding: 17px 30px; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  min-height: 76px;
  padding: 14px var(--gutter);
  max-width: var(--wrap);
  margin: 0 auto;
  flex-wrap: wrap;
}

.nav__toggle {
  position: absolute;
  width: 44px;
  height: 44px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}
.nav__toggle:focus-visible ~ .nav__burger {
  outline: 2px solid var(--rust);
  outline-offset: 3px;
}

.nav__burger {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  margin-left: -10px;
}
.nav__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--fg);
  transition: transform var(--ease) 160ms, opacity var(--ease) 160ms;
}

.wordmark {
  font: 500 1.375rem/1 var(--font-display);
  color: var(--fg);
  text-decoration: none;
  letter-spacing: var(--ls-tight);
}

.nav__links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.nav__links a {
  font: var(--text-body-s);
  color: var(--fg);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--ease) 140ms, color var(--ease) 140ms;
}
.nav__links a:hover,
.nav__links a[aria-current="page"] { border-bottom-color: var(--rust); }

/* ---------- section shells ---------- */
.band { padding: 128px 0; }
.band--white { background: var(--surface); }
.band--dark { background: var(--surface-dark); color: var(--fg-on-dark); }
.band--dark h2, .band--dark h1 { color: var(--fg-on-dark); }

.section-title {
  font: var(--text-display-m);
  letter-spacing: var(--ls-tight);
  text-wrap: pretty;
}

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 72px;
  align-items: start;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
}

.lead { font: var(--text-body-l); text-wrap: pretty; }
.body { font: var(--text-body-m); color: var(--fg-muted); text-wrap: pretty; }
.band--dark .body { color: var(--fg-on-dark-muted); }

/* ---------- hero ---------- */
.hero { background: var(--surface); padding: 96px 0 112px; }

.hero__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 72px;
  align-items: start;
}

.hero__headline {
  font: var(--text-display-l);
  letter-spacing: var(--ls-tight);
  max-width: 14ch;
  text-wrap: pretty;
}
.hero__headline span { display: block; margin-top: 0.28em; }
.hero__headline em { font-style: italic; color: var(--rust); }

.hero__sub {
  font: var(--text-body-l);
  color: var(--fg-muted);
  max-width: 46ch;
  text-wrap: pretty;
}

.hero__portrait {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--radius-m);
}

/* ---------- credibility ---------- */
.credibility { margin: 56px auto; }

.credibility__box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  padding: 36px 44px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 32px;
}

.credibility__item {
  font: var(--text-body-s);
  border-top: 2px solid var(--rust);
  padding-top: 14px;
}

/* ---------- barrier ---------- */
.barrier__inner {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
  align-items: flex-start;
}

.barrier__close {
  font: var(--text-body-l);
  border-top: 1px solid var(--border-on-dark);
  padding-top: 32px;
  text-wrap: pretty;
}

/* ---------- testimonials ---------- */
.quotes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.quote {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-s);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  justify-content: space-between;
}

.quote blockquote {
  font: 400 1.1875rem/1.5 var(--font-display);
  text-wrap: pretty;
}

.quote figcaption { font: var(--text-body-s); color: var(--fg-muted); }
.quote figcaption strong { display: block; color: var(--fg); font-weight: 500; }

/* ---------- about ---------- */
.about__portrait {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-m);
}

/* ---------- book & thought leadership ---------- */
.book {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 48px;
  align-items: start;
}

.book__card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-s);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
}

.book__cover {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 4px;
}

.links { display: grid; gap: 20px; }

.link-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  padding: 28px 32px;
  text-decoration: none;
  transition: border-color var(--ease) 160ms;
}
.link-card:hover { border-color: var(--rust); }
.link-card__title { font: var(--text-heading-m); color: var(--fg); }
.link-card__desc { font: var(--text-body-s); color: var(--fg-muted); }
.link-card__go { font: var(--text-body-s); color: #B8431C; }

/* ---------- mailing list ---------- */
.signup { padding: 96px 0; }

.signup__inner {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
  text-align: center;
}

.signup__form {
  display: flex;
  gap: 12px;
  align-items: stretch;
  margin-top: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.signup__input {
  font: var(--text-body-m);
  font-family: var(--font-body);
  color: var(--fg);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-s);
  padding: 12px 16px;
  width: 320px;
}
.signup__input:focus {
  outline: none;
  border-color: var(--rust);
  box-shadow: 0 0 0 3px rgba(219, 82, 39, 0.25);
}

.signup__small { font: var(--text-body-s); color: var(--fg-muted); max-width: 52ch; text-wrap: pretty; }

/* ---------- footer ---------- */
.site-footer {
  background: var(--surface-dark);
  color: var(--fg-on-dark);
  padding: 96px 0 40px;
}

.site-footer a { color: var(--fg-on-dark); text-decoration: none; }
.site-footer a:hover { color: var(--rust); }

.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 56px;
}

.footer__col { display: flex; flex-direction: column; gap: 14px; }
.footer__col .eyebrow { color: var(--fg-on-dark-muted); }
.footer__col a, .footer__col p { font: var(--text-body-s); }

.footer__social { display: flex; gap: 20px; margin-top: 12px; }
.footer__social a { color: var(--fg-on-dark-muted); }

.footer__legal {
  margin-top: 72px;
  padding-top: 28px;
  border-top: 1px solid var(--border-on-dark);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
  font: var(--text-body-s);
  color: var(--fg-on-dark-muted);
}
.footer__legal a { color: var(--fg-on-dark-muted); }

/* ---------- stub pages ---------- */
.stub { min-height: 60vh; display: flex; flex-direction: column; gap: 24px; align-items: flex-start; }
.stub h1 { font: var(--text-display-l); letter-spacing: var(--ls-tight); }

/* ---------- medium screens: nav needs ~1063px for one row ---------- */
@media (max-width: 1080px) {
  .nav { gap: 20px; }
  .nav__links { order: 3; flex-basis: 100%; gap: 22px; justify-content: flex-start; }
  .nav__links a { padding: 0; }
  .nav { padding-bottom: 18px; }
}

/* ---------- collapse all two-column grids ----------
   Pages set inline grid-template-columns (260px 1fr, 1.2fr 0.8fr, ...),
   which cannot auto-fit, so they must be overridden here. */
@media (max-width: 860px) {
  .split,
  .hero__grid,
  .book { grid-template-columns: 1fr !important; gap: 32px; }

  /* nothing pins itself to a column on a phone */
  [style*="sticky"] { position: static !important; }

  /* let the portrait sit inside the run of text rather than after all of it */
  .hero__grid { display: flex; flex-direction: column; gap: 24px; }
  .hero__grid > .stack { display: contents; }
  .hero__grid > .stack > .eyebrow,
  .hero__grid > .stack > h1 { order: -2; }
  .hero__grid > .about__portrait { order: -1; width: 240px; aspect-ratio: 1; }

  .book__cover { max-width: 260px; }
}

/* ---------- narrow screens ---------- */
@media (max-width: 720px) {
  :root { --gutter: 24px; }
  .band { padding: 88px 0; }
  .hero { padding: 64px 0 80px; }
  .split { gap: 48px; }
  .credibility__box { padding: 28px 32px; }
  .signup__input { width: 100%; }

  /* header: sticky, hamburger left, wordmark right */
  .site-header { position: sticky; top: 0; }

  .nav {
    min-height: 0;
    padding: 10px var(--gutter);
    gap: 12px;
    align-items: center;
  }

  .nav__burger { display: flex; order: 1; }
  .wordmark { order: 2; margin-left: auto; font-size: 1.25rem; }
  .nav__cta { display: none; }

  .nav__links {
    order: 3;
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    gap: 0;
    margin-top: 4px;
    border-top: 1px solid var(--border);
  }
  .nav__toggle:checked ~ .nav__links { display: flex; }
  .nav__links li { border-bottom: 1px solid var(--border); }
  .nav__links a {
    display: block;
    padding: 15px 0;
    font: var(--text-body-m);
    border-bottom: none;
  }
  .nav__links a[aria-current="page"] { color: var(--rust); }

  .nav__toggle:checked ~ .nav__burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav__toggle:checked ~ .nav__burger span:nth-child(2) { opacity: 0; }
  .nav__toggle:checked ~ .nav__burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

}